Brake-beam.



J. M. HANSEN.

BRAKE BEAM.

APPLICATION FILED OUT- 27, 1911.

Patented July 22, 1913.

INVENTOR.

NOE

UNITED @lhtlthd PATENT UFFICE.

JOHN M. HANSEN, OF PITTSBURGH, PENN$YLVANIA.

BRAKE-BEAM.

LUWKSKW.

Application filed October 27, 1911.

To all whom 15 may concern:

Be it known that 1, JOHN M. HANsnN, a citizen of the United States, andresident of Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement in Brakelleams; and l do hereby declare the following to be a full, clear, andexact description thereof.

My invention relates to brake-beams, and more particularly to the typeknown a trussed brake-beam.

The object of my invention is to provide a light and rigid brake-beamwhich will withstand severe usage to which such brakebeams are subjectedand maintain the shoes in proper position with reference to the wheels.

To these ends my invention comprises the novel features hereinafter setforth and claimed.

In the accompanying drawing, Figure 1 is a plan. view of a portion of abrake-lueam en'ibodying my invention and partially in section. Fig. 2 isa rear view of same; Fig. 3 is an enlarged section on the line 33 Fig.2; Figs. 4, 5, 6 and 7 are enlarged sections on the lines 4lt, 5-5, 6-6and 7-7, respectively, of Figs. 1 and 2, the brake head being removed.

My improved bral ebeam comprises the compressionmember 2, thetension-member 3 and the king-post 4. The compressionmember 2 is formedof metal of suitable thickness and may be formed from a rolled or bentchannel, the original cross-section of same being indicated in Fig. 7taken at or near the mid-portion of the compressionmember. Thischannel-member is then sul jected to compression so as to force theflanges 5 toward each other, and at the same time gradually curving theflanges as the outer ends of the beam are reached, as clearly shown bythe sections l, 5 and 6. This compression of the member is co1nmenced toa small degree just beyond the mid-portion of the beam and graduallyincreases toward the outer end of the beam Specification of LettersPatent.

Patented July 22, 1913.

Serial. No. 657,132. at

until at the end, as indicated in Fig. 6, the flanges are curved untilthe compressionmember almost surrounds the tension-member 3. Thiscompressing of the flanges of the member 2 will act to decrease thethickness of the beam or taper it from the midportion to the end asshown in the rear view Fig. :2 and at the same time the compressionmember is increased in width t0- ward the outer end. The brake-head 7has the circular flaring opening 8 which receives the end of thecompression-member 2 and the tension-member 3, and this brake-head isheld in place by the nut 9 which is threaded onto the end of thetension-member 3 projecting beyond said brake-head.

The outer ends of the compression member 2 are slightly cut away as at10 to enter the flaring seat in. the brakediead, and it is this extremeend-portion which is bent around in a substantially circular form toemln-ace the outer end of the tension-member 3. With aconipression-member 2 formed in this manner and united with thetensionanember and brake-head, I provide a very strong and rigidconstruction in which the strength is increased at the outer end of thebeam where the greatest strain comes and in consequence the brake-shoeis held in proper alinement with the wheel and the outer end of thebrake-beam is not liable to sag or bend.

hat I claim is:

A brake-beam comprising a compressionmember, a tension-mei'nber, aking-post connecting same, said compression-member formed of achannel-section, the flanges of said channel gradually approaching eachother from or about, the mid-portion of said beam to the ends thereof,and gradually bent to form a round section at or adjacent the ends.

In testimony whereof, I the said J OHN M. Hansen have hereunto set myhand.

JOHN M. HANSEN.

Witnesses:

ROBERT C. TOTTEN, JOHN F. WILL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

